Improvement in dampers



UNITED STATES GEORGE TAINTER, OF VATERTOWN, MASSACHUSETTS.

IMPROVEMENT IN DAM PERS.

Specification forming part of Letters Patent No. 36,679, dated October 14, 18672.

To @ZZ whom t may concern/:

Be it known that I, GEORGE TATNTER, of Watertown, in thecounty of Middlesex and State of Massachusetts, have invented a new and Improved Ventilating-Damper for Stoves and Furnaces; and I do hereby declare that the following is a full, clear, and exact dey seription of the same, reference being had to the accompanying drawings, making apart of this specification, in which- Figure 1 is a vertical central section of my invention, taken in the line x x, Fig. 2; Fig. 2, a horizontal section of the same, taken in the line y y, Fig. 1.

Similar letters of reference indicate correspending parts in the two iigures. t

This invention relates to an improvement in ventilatingdampers for which LettersPatengvere granted to me bearing date May 13, 18

The invention consists in placing the hinged conical damper within a drum or cylinder which is in communication with the ilue or pipe of the stove or furnace and is larger in diameter than the flue or pipe, and placing the velitilatingregister within the drum or cylinder, as hereinafter fully shown and de scribed. Y

In the invention previously patented the conical damper was placed within the iiue or pipe not enlarged in the least for its reception, and the flue or pipe was too much obstructed by the same, and the invention did not operate as perfectly asit might. The ventilating-register was also plaeedon the outer side of the ue or pipe, and had rather an unsightly appearance. These objections are fully obviated by the within-described improvenient.

' than the pipe or iiue A, and within the former there is placed a band or hollow cylinder, C, which has two or more openings, a, made in vit, similar openings, b, being made in the drum B. The band or cylinder C is allowed to turn freely within the drum, and it forms a register, by turning which more or less air may be admitted into the drum B and pipe or iiue A, or the latternamed parts be entirely cut off from the external air, when desired.

D is a hollow conical damper formed of two vertical parts, c c, which are connected at their lower ends by joints d d. This damper is constructed precisely like the one in the previously-patented invention. When closed, it has a small circular opening, d', at its top, as shown in both figures. The damper D is connected with the cylinder or register C by means of a rod, E, which passes through obf long vertical slots e in the two parts o c ofthe damper and through the drum B, as shown clearly in Fig. 2.

The operation of the damper D and register C is the same as in the invention previously alluded to, the relative position of the slots e ofthe damper with openings a b ofthe register C and drum B being' such that when the openings a b are in line with each other the damper D will be closed, and when the damper is open vthe openings b of the drum B will be closed or covered by the register C.

The two parts c c of the damper are adjusted by the movement of the register C, the rod E forming the connection between the two. As the air is admitted into the pipe or ilue A, the draft of the stovehwill be proportionally checked and the draft increased as the openings b in the drum Bare closed. The damper is shown in an open stateby the red lines. Vhen the damper is closed,the small opening d at its top will admit of the escape of gases upward in the pipe or i'lue. The register C is turned by means of a pin, a", projecting from it through one of the openings b of the drum B. By thisimprovement the damper does not, as in the previous invention, serve to obstruct the iiue, as the drum B is made sufficiently larger than the pipe or iiue to obviate that diiliculty, and also to admit of the reg ister C being within the drum.

I do not claim, broadly, the conical damper and register irrespective of the arrangement of the same within a drum which is in co1nmunieation with the pipe or flue and larger in diameter than the latter, for the above tirstnamed parts have been used and patented by larger in diameter than the pipe or flue A, me; but, h d substantially as set forth..

Having t ns escrbed my invention, what I v 1 claim as new, and desire to secure by Letters GEORGE TAINTER' Patent, is- Witnesses:

The combination of the conical damper D CEAS. J. BARRY, and register O, when fitted Within a drum7 B, CHARLES BEMIS. 

